serde-pyobject
PyO3's PyAny as a serde data format
Usage
Serialize T: Serialize into &'py PyAny:
use serde::Serialize;
use pyo3::{Python, types::{PyAny, PyDict}};
#[derive(Serialize)]
struct A {
a: u32,
b: String,
}
Python::with_gil(|py| {
let a = A { a: 1, b: "test".to_string() };
let obj: &PyAny = serde_pyobject::to_pyobject(py, &a).unwrap();
assert!(obj.is_instance_of::<PyDict>());
});
Deserialize &'py PyAny into T: Deserialize<'de>:
use serde::Deserialize;
use pyo3::{Python, types::{PyAny, PyDict}};
use serde_pyobject::{from_pyobject, pydict};
#[derive(Debug, PartialEq, Deserialize)]
struct A {
a: u32,
b: String,
}
Python::with_gil(|py| {
let a: &PyDict = pydict! { py,
"a" => 1,
"b" => "test"
}
.unwrap();
let a: A = from_pyobject(a).unwrap();
assert_eq!(a, A { a: 1, b: "test".to_string() });
});
Mapping between Python and serde data model
| serde data model | PyO3 type | Rust | Python |
|---|---|---|---|
i8, i16, i32, i64, isize, u8, u16, u32, u64, usize |
PyLong |
123 |
123 |
f32, f64 |
PyFloat |
1.0 |
1.0 |
bool |
PyBool |
true |
true |
char, string |
PyString |
'a', "test" |
"a", "test" |
| option | PyAny 1 |
None, Some(1) |
None, 1 |
| unit | PyTuple |
() |
() |
| unit struct | PyTuple |
struct Unit |
() |
| unit variant | PyDict |
E::A in enum E { A, B } |
{ "E": "A" } |
| newtype struct | PyDict |
A(32) of struct A(u8) |
{ "A": 32 } |
| newtype variant | PyDict |
E::N(41) of enum E { N(u8) } |
{ "E": ("N", 41) } |
| seq | PyList |
vec![1, 2, 3] |
[1, 2, 3] |
| tuple | PyTuple |
(1, "test") |
(1, "test") |
| tuple struct | PyDict |
T(1, "a") of struct T(u32, String) |
{ "T": (1, "a") } |
| tuple variant | PyDict |
- | - |
| map | PyDict |
- | - |
| struct | PyDict |
A { a: 1, b: "test" } of struct A { a: u32, b: String } |
{ "A": { "a": 1, "b": "test"} } |
| struct variant | PyDict |
- | - |
License
© 2023 Jij Inc.
This project is licensed under either of
- Apache License, Version 2.0, (LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or https://opensource.org/licenses/MIT)
at your option.
Footnotes
-
Some(value)is serialized asvalue↩
1 Jan 12, 2022
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